Record Display for the EPA National Library Catalog


Main Title Particulate Characteristics and Visual Effects of the Atmosphere at Research Triangle Park.
Author Conner, W. D. ; Bennett, R. L. ; Weathers, W. S. ; Wilson, W. E. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/026;
Stock Number PB91-183392
Additional Subjects Aerosols ; Atmospheric effects ; Visibility ; Light scattering ; Particle size distribution ; Sulfur ; Carbon ; Sulfates ; Meteorological data ; Atmospheric chemistry ; Reprints ; Research Triangle Park(North Carolina)
Library Call Number Additional Info Location Last
NTIS  PB91-183392 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
During a one-month period in the fall of 1987 a wide range in the visual quality of the atmosphere at Research Triangle Park, NC, was observed. During the period, the light scatter coefficient; SO2, NO2, and O3 concentrations; temperature; relative humidity; and radiation intensity of the atmosphere were continuously monitored. In addition, 60 filter samples were intermittently collected with two dichotomous (large and small particle) size-selective samplers. The dichotomous samplers were operated concurrently to obtain samples on Teflon and quartz filters for different analyses. Also collected were six impactor samples for sulfate size distribution analysis; and at selected times during the study, long-path measurements were made of the atmospheric extinction coefficient and the extinction of contrast by the atmosphere. (Copyright (c) 1991--Air & Waste Management Association.)